"Trump Las Vegas workers have spoken loud and clear," said Geoconda Arguello-Kline, secretary-treasurer of the Culinary Union. "Trump Las Vegas should recognize the workers' vote immediately and sit down with us to negotiate a contract as soon as possible."

Spokespeople for the hotel were not immediately available for comment on the vote.

Nevada is one of the most heavily unionized states in the country. The two unions represent more than 57,000 workers in Las Vegas and Reno, including workers at most of the casino resorts and five other non-casino hotels.